| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-53146: media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer() |
| |
| In dw2102_i2c_transfer, msg is controlled by user. When msg[i].buf |
| is null and msg[i].len is zero, former checks on msg[i].buf would be |
| passed. Malicious data finally reach dw2102_i2c_transfer. If accessing |
| msg[i].buf[0] without sanity check, null ptr deref would happen. |
| We add check on msg[i].len to prevent crash. |
| |
| Similar commit: |
| commit 950e252cb469 |
| ("[media] dw2102: limit messages to buffer size") |
| |
| The Linux kernel CVE team has assigned CVE-2023-53146 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.14.326 with commit 77cbd42d29de9ffc93d5529bab8813cde53af14c |
| Fixed in 4.19.295 with commit ecbe6d011b95c7da59f014f8d26cb7245ed1e11e |
| Fixed in 5.4.257 with commit beb9550494e7349f92b9eaa283256a5ad9b1c9be |
| Fixed in 5.10.197 with commit 97fdbdb750342cbc204befde976872fedb406ee6 |
| Fixed in 5.15.133 with commit 903566208ae6bb9c0e7e54355ce75bf6cf72485d |
| Fixed in 6.1.55 with commit 08dfcbd03b2b7f918c4f87c6ff637054e510df74 |
| Fixed in 6.5.5 with commit fb28afab113a82b89ffec48c8155ec05b4f8cb5e |
| Fixed in 6.6 with commit 5ae544d94abc8ff77b1b9bf8774def3fa5689b5b |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2023-53146 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/media/usb/dvb-usb/dw2102.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/77cbd42d29de9ffc93d5529bab8813cde53af14c |
| https://git.kernel.org/stable/c/ecbe6d011b95c7da59f014f8d26cb7245ed1e11e |
| https://git.kernel.org/stable/c/beb9550494e7349f92b9eaa283256a5ad9b1c9be |
| https://git.kernel.org/stable/c/97fdbdb750342cbc204befde976872fedb406ee6 |
| https://git.kernel.org/stable/c/903566208ae6bb9c0e7e54355ce75bf6cf72485d |
| https://git.kernel.org/stable/c/08dfcbd03b2b7f918c4f87c6ff637054e510df74 |
| https://git.kernel.org/stable/c/fb28afab113a82b89ffec48c8155ec05b4f8cb5e |
| https://git.kernel.org/stable/c/5ae544d94abc8ff77b1b9bf8774def3fa5689b5b |
